.ROCKWELL - Raw Rockwell 2/3/4-bit ADPCM data

Notes:

There's no standard file extension for this type of data and there's no way to auto-detect the format, so you'll have to use a .ROCKWELL file extension to make the program recognize what it is!

The program will then ask you for the number of bits per sample (2, 3, or 4) when it is opened. Alternatively, you can use the extensions '.ROCKWELL-2', '.ROCKWELL-3' and '.ROCKWELL-4' to indicate the bits per sample of the content.